bull2 interjection UNTRUEused to say that you do not believe or agree with what someone has said 废话,胡说 Bull! Where did you get that idea? 胡扯! 你怎么会有那种想法?
bull• Bull! You could have come if you really wanted to.
From Longman Business Dictionary
bullbull /bʊl/ noun [countableC]FINANCE1someone who thinks that prices of shares, bonds, currencies, etc are going to rise, and who will therefore keep and buy investmentsBulls predict the Dow Jones will go beyond 13,000.
A growing group of dollar bulls (=people who think the price of the dollar is going to rise) has kept the dollar on a firm footing.
→ compare bear